CN109384989A - A kind of environment-friendly type anti-rutting asphalt mixture that wet-dry change combines - Google Patents
A kind of environment-friendly type anti-rutting asphalt mixture that wet-dry change combines Download PDFInfo
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- CN109384989A CN109384989A CN201811107581.3A CN201811107581A CN109384989A CN 109384989 A CN109384989 A CN 109384989A CN 201811107581 A CN201811107581 A CN 201811107581A CN 109384989 A CN109384989 A CN 109384989A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
Abstract
The invention discloses the environment-friendly type anti-rut agents that a kind of dry method admixes asphalt, it is characterized by: being to be made of each raw material by following proportion: with the quality of anti-rut agent for 100, the mass fraction for recycling spent resin is 30~60%, the mass fraction of inorganic filler is 10~15%, the mass fraction of organic plasticizer is 2~5%, the mass fraction of hard grades of bitumen is 30~50%, and the mass fraction of rich aromatic component is 5~10%.The Rut resistance composite modified asphalt mixture that a kind of wet-dry change of the present invention combines, which is characterized in that dry method wet process is combined in preparation process, uses composite modified asphalt.The present invention has the advantage that inorganic filler is added after being sufficiently swollen in recycling spent resin, anti-vehicle is set to remove agent with enough intensity, wrapping for hard grades of bitumen further improves compatibility；The recycling polymer used is from a wealth of sources, cheap, and the processing problem of a large amount of waste plastic is also solved while reducing use cost；Composite modified asphalt makes mixture low temperature performance excellent, and cold cracking does not occur.
Description
Technical field
The present invention relates to road engineering material fields, and in particular to a kind of with shoddy, recycling spent resin, rich aromatic component
Deng the environment-friendly type anti-rutting asphalt mixture prepared for primary raw material using the method for dry-and-wet combined, it is mainly used for asphalt
Supercrust for improving the anti-rut behavior of surface layer asphalt, and takes into account its cryogenic property.
Background technique
The economy of China's fast development promotes the volume of traffic rapidly to increase, and increasingly severe overloading wagon phenomenon is universal
Occur, the loading capacity of vehicle is far beyond the requirement for standardizing defined standard axle load.Bring result is exactly high therewith
Even just there are the public affairs such as high temperature track and bellding in the only 1-2 that is open to the traffic in advance within the shorter time in fast highway
Road road surface early disease, these diseases not only largely reduce the service performance of road, also substantially reduce making for road
With the service life, to highway administration department highway maintenance in terms of cause huge technological challenge and economic loss.Wherein,
Track disease becomes the failure mode of the especially southern hot area's bituminous pavement most serious in China.The prevention and treatment of track becomes highway
Department's urgent problem to be solved.
In order to improve the rutting resistance of bituminous pavement, need to carry out on the Material composition design of asphalt itself
Research.Wherein, addition pitch anti-rut agent is a kind of effective method for improving stability at high temperature of asphalt mixture, at present about
It is more come the research for improving asphalt pavement rut resisting performance to add anti-rut agent.Anti-rut agent as asphalt mixture additive,
It is combined by multiple polymers, and appearance is ater granular solids.Anti-rut agent is used in construction, can not only be increased
Add the adhesiveness of surface of aggregate, but also more closely knit skeleton structure can be formed with the gap between filler aggregate, plays and add
Muscle effect, to improve the high-temperature stability of asphalt.Correlative study shows that the addition of anti-rut agent not only can be substantially
Promote the high temperature stability performance of bituminous pavement.But there are many problems, such as anti-vehicle in the research and application of anti-rut agent at present
The good and bad jumbled together for the type of rut agent, and quality is irregular, and the exploitation design process of anti-rut agent is immature, and Study on mechanism is endless
It is apt to.Presently commercially available anti-rut agent mainly delivers directly addition in mixture production, although pitch coagulation can be significantly improved
The anti-rut behavior of soil, but since the poor compatibility with pitch needs higher temperature when carrying out mixture production using method of delivering directly
Degree, while needing to extend the mixing time, reduce the production efficiency of mixture；Only emphasize rutting resistance without taking into account simultaneously
Anti-low-temperature cracking ability.
Summary of the invention
Key technical problem to be solved by this invention is aiming at the problems existing in the prior art, to provide a kind of low cost
Environment-friendly type anti-rutting asphalt mixture and preparation method thereof, there is excellent anti-rut behavior, and take into account cryogenic property, can be with
Effective prevention high temperature track and cold cracking.The invention can effectively utilize waste Crumb rubber, the useless recycling such as PE and used oil
Resource improves resource reutilization rate while reducing cost, has biggish economic benefit and social benefit.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of dry method admixes the environment-friendly type anti-rut agent of asphalt, is composed of the following raw materials in parts by weight: recycling
30~60 parts of spent resin, 10~15 parts of inorganic filler, 2~5 parts of organic plasticizer, 30~50 parts of hard grades of bitumen, the richness aromatic hydrocarbons
The mass fraction of component is 5~10 parts.
In order to improve the compatibility of anti-rut agent and pitch, the application has found by system research and large scale experiment: can
The compatibility of anti-rut agent and pitch is improved by the coordinated of following three kinds of means, first is that recycling waste and old resin and Fu Fang
The hydrocarbon component long agitation technique is sufficiently swollen, second is that improving the plasticity of recycling spent resin by addition plasticiser；Three
It is the compatibility further improved with pitch that wraps of hard grades of bitumen, above-mentioned means can make mix temperature reduce by 10~20 DEG C.
In some embodiments, 45~60 parts of the spent resin of recycling, 12.5~15 parts of inorganic filler, organic plasticizer 3.5
~5 parts, 40~50 parts of hard grades of bitumen, the mass fraction of the richness aromatic component is 7.5~10 parts.
In some embodiments, 30~45 parts of the spent resin of recycling, 10~12.5 parts of inorganic filler, organic plasticizer 2~
3.5 parts, 30~40 parts of hard grades of bitumen, the mass fraction of the richness aromatic component is 5~7.5 parts.
In some embodiments, the spent resin of the recycling is useless PE, useless PP, useless PET, the useless PVC, useless furfural tree of recycling
At least one of rouge, useless phenolic resin.
In some embodiments, the inorganic filler is at least one of flyash, red mud, cement.
In some embodiments, the organic plasticizer is phthalate, terephthalic acid ester, benzene polyacid ester
At least one of class, benzoates plasticiser.
In some embodiments, the hard grades of bitumen is bitumen, lake asphalt, rock asphalt of the needle penetration between 20-50
At least one of.
In some embodiments, the rich aromatic component is furfural extract oil, rubber oil, naphthenic base extraction oil, intermediate base
Extraction oil, at least one of m- naphthenic base extraction oil.
The present invention also provides the preparation methods that a kind of dry method admixes the environment-friendly type anti-rut agent of asphalt, comprising:
(1) spent resin of recycling and rich aromatic component are reconciled and are heated to 140 DEG C~160 DEG C, mechanical mixture is uniform, makes
Obtain resin premixed object；
(2) inorganic filler and organic plasticizer is added according to the ratio into resin premixed object, mechanical mixture is uniform, obtain it is organic-
Inorganic resin blend；
(3) under the high speed shear state that heating temperature is 160 DEG C~190 DEG C, revolving speed is 2000rpm~5000rpm to
Above-mentioned organic and inorganic resin blend, then melt blending extrusion molding are added in the hard grades of bitumen of melting, water cooling wire drawing is cut
Grain, is finally dried to obtain the anti-rut agent.
The application research discovery: using above-mentioned preparation method, and inorganic filler is dispersed in by sufficient peptizaiton
In resin, center intensity point is formed, to make anti-vehicle remove agent with enough intensity, to effectively improve the anti-of mixture
Track ability.
The present invention also provides the environment-friendly type Rut resistance composite modified asphalt mixtures that a kind of wet-dry change combines, comprising:
Thickness is gathered materials and heating and is stirred；Under agitation, any above-mentioned anti-rut agent is added, is added after 1-2s
Composite modified asphalt carries out 50~60s of mix, is eventually adding miberal powder and carries out the anti-vehicle that 50~60s of mix combines to get wet-dry change
Rut composite modified asphalt mixture.
Beneficial effects of the present invention
(1) in anti-rut agent formula provided by the invention and preparation process, recycling spent resin mainly improves high-temperature behavior,
It is sufficiently swollen by recycling spent resin and rich aromatic component long agitation, the addition of plasticiser further improves recycling
The plasticity of spent resin, inorganic filler are dispersed in resin by sufficient peptizaiton, form center intensity point, thus
Anti- vehicle is set to remove agent with enough intensity, hard grades of bitumen wraps the compatibility further improved with pitch, to improve
The rutting resistance of mixture.
(2) wide using recycling polymer, sources such as useless PE, useless PP, useless PET, useless PVC in anti-rut agent of the present invention
It is general, it is cheap, the processing problem for a large amount of waste plastic that China faces is also solved while reducing use cost, is formed
Environmental protection, waste utilization and the three win situations for extending road life.
(3) composite modified asphalt, pitch have been used in the anti-rutting asphalt mixture that wet-dry change of the present invention combines
The anti-rut behavior of mixture is excellent, and composite modified asphalt makes its cryogenic property also very good, and low temperature will not occur and open
It splits.
(4) preparation method of the present invention and required equipment are simple, easy to operate, and convenient for control, raw material and instrument are set technological parameter
It is low etc. for use cost.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
On the one hand, the present invention provides the environment-friendly type anti-rut agent that a kind of dry method admixes asphalt, the anti-rut agent
It is made of recycling spent resin, inorganic filler, organic plasticizer, hard grades of bitumen, rich aromatic component；Each original of the anti-rut agent
Material is constituted by following proportion:
With the quality of the anti-rut agent for 100%, the mass fraction of the recycling spent resin is 30~60%, the nothing
The mass fraction of machine filler is 10~15%, and the mass fraction of the organic plasticizer is 2~5%, the matter of the hard grades of bitumen
Measuring score is 30~50%, and the mass fraction of the richness aromatic component is 5~10%.
Recycling spent resin of the present invention is to recycle useless PE, useless PP, useless PET, useless PVC, useless furfural resin, useless phenolic aldehyde tree
The combination of one or more of rouge；
Inorganic filler of the present invention be flyash, red mud, cement it is one or more；
Organic plasticizer of the present invention is phthalate, terephthalic acid ester, benzene polyacid esters, benzene first
One or more of combinations of esters of gallic acid.
Hard grades of bitumen of the present invention is bitumen, lake asphalt, rock asphalt one of of the needle penetration between 20-50
Or it is a variety of.
Richness aromatic component of the present invention is furfural extract oil, rubber oil, naphthenic base extraction oil, intermediate base extract oil out,
In m- naphthenic base extraction oil one or more of combinations.
The preparation method that a kind of dry method of the present invention admixes the environment-friendly type anti-rut agent of asphalt includes following 4
A step:
(1) recycling spent resin and rich aromatic component are reconciled according to the proportion and is heated to 140 DEG C~160 DEG C, speed of agitator
To prepare resin premixed object under 100rpm~300rpm；
(2) be added inorganic filler and organic plasticizer according to the ratio into resin premixed object, speed of agitator be 500rpm~
Organic-inorganic resin blend is prepared under 1000rpm；
(3) under the high speed shear state that heating temperature is 160 DEG C~190 DEG C, revolving speed is 2000rpm~5000rpm to
Above-mentioned organic and inorganic resin blend is added in the hard grades of bitumen of melting, then adds twin-screw extrude further melting
Blending extrusion molding, water cooling wire drawing, pelletizing are finally dried to obtain the anti-rut agent.
On the other hand, the present invention provides a kind of preparation process of Rut resistance composite modified asphalt mixture that wet-dry change combines
Include:
(1) it prepares and stores above-mentioned anti-rut agent；
(2) reserve includes the asphalt raw material of composite modified asphalt, mineral aggregate and above-mentioned anti-rut agent；
(3) thickness is gathered materials and is poured into mix pot, mix pot is heated and stirred；Under agitation, to mix
Above-mentioned anti-rut agent is added in pot, composite modified asphalt is added in subsequent 1-2s, carries out mix 60s, is eventually adding miberal powder and is mixed
60s is closed, the Rut resistance composite modified asphalt mixture of wet-dry change combination is obtained.
Wherein, in the preparation process for the Rut resistance composite modified asphalt mixture that wet-dry change combines, composite modified asphalt
For one of SBS/ rubber powder composite modified asphalt, SBS/PE composite modified asphalt, PE/ rubber powder composite modified asphalt；
The composite modified asphalt is made of two kinds in matrix pitch and shoddy, SBS, PE three；
The rubber powder be waste-tyre rubber-powder and/or raw rubber powder, mesh number be 20 mesh~120 mesh, such as 20 mesh, 30 mesh,
40 mesh, 60 mesh, 80 mesh, 100 mesh, 120 mesh；
The SBS molecular structure be it is linear or star-like, block ratio S/B be 20/80 to 40/60 between, molecular weight is
80000~220000；
The PE is one of HDPE, LDPE and LLDPE or a variety of；
The matrix pitch, which is attached most importance to, hands over No. 70 pitches；
The proportion of the composite modified asphalt forms are as follows: 70-80 parts of matrix pitch, give up PE15-20 parts, shoddy 10-
20 parts, 1-3 parts of SBS, 8-15 parts of oil of extraction, 0.1-3.0 parts of auxiliary agent.
The extraction oil be furfural extract oil, naphthenic base extraction oil, intermediate base extraction oil and in m- naphthenic base extraction oil
It is one or more.
The auxiliary agent is mainly organized as sulphur, such as the combination of one or more of elemental sulfur, S40, S60 and S90.
The preparation method of the composite modified asphalt the following steps are included:
(1) shoddy, any two kinds in useless PE and SBS are added into matrix pitch, heating temperature be 160 DEG C~
190 DEG C, shearing 20min~30min in the case where revolving speed is the high speed shear state of 2000rpm~5000rpm；
(2) it is slowly added in the case where revolving speed is the high speed shear state of 2000rpm~5000rpm into sample prepared by (1)
Auxiliary agent shears 10min~20min；
(3) in the case where revolving speed is the stirring of 1000rpm~2000rpm, stirring 1-2h is obtained.
Below with reference to embodiment, the present invention is further described, and implementation is raw materials used to be all made of ommercially available AR.
Embodiment 1
Each raw material composition and mass percent proportion of the anti-rut agent of the embodiment of the present invention are as follows: useless PE40%, fine coal
Ash 10%, ethyl phthalate 2%, bitumen 38%, furfural extract oil 10%.The preparation method is as follows:
(1) useless PE and furfural extract oil are reconciled according to the proportion and is heated to 140 DEG C, speed of agitator is to prepare under 200rpm
Resin premixed object；
(2) flyash and ethyl phthalate is added according to the ratio into resin premixed object, speed of agitator is under 1000rpm
Prepare organic-inorganic blend；
(3) in the bitumen under the high speed shear state that heating temperature is 170 DEG C, revolving speed is 4000rpm to melting
Blend in (2) is added, then adds twin-screw extrude further melt blending extrusion molding, water cooling wire drawing, pelletizing,
Finally it is dried to obtain the anti-rut agent.
The environment-friendly type anti-rutting asphalt mixture that wet-dry change of the embodiment of the present invention combines is made as follows: by embodiment
1 anti-rut agent and SBS/ rubber powder composite modified asphalt gather materials and mineral aggregate, wherein include: in SBS/ rubber powder composite modified asphalt
Shoddy is 30 mesh waste tyre rubber powders, and SBS is linear structure, and S/B group is as 30/70, molecular weight 110000, and matrix pitch is
No. 70 pitches are handed over again, and extraction oil is furfural extract oil, and auxiliary agent is elemental sulfur, the proportion composition of composite modified asphalt are as follows: matrix drip
Blueness 70 parts, 2 parts of SBS, 20 parts of shoddy, 8 parts, 0.2 part of auxiliary agent of extraction oil.Composite modified asphalt described in the embodiment of the present invention
It is made according to the following steps: (1) shoddy and SBS being added into matrix pitch, is 170 DEG C, is in revolving speed in heating temperature
30min is sheared under the high speed shear state of 4000rpm；(2) it is slowly added to help in the case where revolving speed is the high speed shear state of 4000rpm
20min is sheared in agent；(3) in the case where revolving speed is the stirring of 2000rpm, stirring 2h is obtained.
According to the AC-13 type gradation in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004), the present invention is real
It is 0.5% (mass percent for accounting for asphalt) and AC-13 pitch that the dry method for applying example, which mixes environment-friendly type anti-rut agent by volume,
Mixture mixes and stirs, bitumen aggregate ratio 5.3%.Thickness is gathered materials and is poured into mix pot, mix pot is heated and stirred；It is stirring
Under the conditions of, be added above-mentioned anti-rut agent into mix pot, composite modified asphalt is added in subsequent 1-2s, carry out mix 60s, finally plus
Enter miberal powder and carry out mix 60s, obtains the Rut resistance composite modified asphalt mixture of wet-dry change combination.By " highway engineering pitch
And Asphalt Mixture Experiment regulation " test method in (JTJ052-2000) standard tests dynamic stability, Marshall stability
With freeze-thaw split intensity ratio, the performance test results are shown in 1.
Embodiment 2
Each raw material composition and mass percent proportion of the anti-rut agent of the embodiment of the present invention are as follows: useless PP 37%, red mud
12%, terephthalic acid (TPA) methyl esters 3%, rock asphalt 30%, furfural extract oil 18%.The preparation method is as follows:
(1) useless PP and rubber oil are reconciled according to the proportion and is heated to 150 DEG C, speed of agitator is to prepare resin under 100rpm
Pre-composition；
(2) red mud and terephthalic acid (TPA) methyl esters is added according to the ratio into resin premixed object, speed of agitator is to make under 500rpm
Have machine-inorganic blend；
(3) in the bitumen under the high speed shear state that heating temperature is 180 DEG C, revolving speed is 4000rpm to melting
Blend in (2) is added, then adds twin-screw extrude further melt blending extrusion molding, water cooling wire drawing, pelletizing,
Finally it is dried to obtain the anti-rut agent.
The environment-friendly type anti-rutting asphalt mixture that wet-dry change of the embodiment of the present invention combines is made as follows: by embodiment
1 anti-rut agent and SBS/PE composite modified asphalt gather materials and mineral aggregate, include: wherein that PE is in SBS/PE composite modified asphalt
High density polyethylene (HDPE), SBS are linear structure, and S/B group becomes 40/60, and molecular weight 100000, matrix pitch, which is attached most importance to friendship 70, to be dripped
Blueness, extraction oil are rubber oil, auxiliary agent S60, the proportion composition of composite modified asphalt are as follows: 70 parts of matrix pitch, gives up at 2 parts of SBS
PE15 parts, 12 parts, 0.2 part of auxiliary agent of extraction oil.Composite modified asphalt described in the embodiment of the present invention is made according to the following steps: (1)
Useless PE and SBS is added into matrix pitch, is 180 DEG C, cut under the high speed shear state that revolving speed is 5000rpm in heating temperature
Cut 20min；(2) it is slowly added to auxiliary agent in the case where revolving speed is the high speed shear state of 5000rpm, shears 10min；(3) it is in revolving speed
2h is stirred under the stirring of 1000rpm to obtain.
According to the AC-13 type gradation in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004), the present invention is real
It is 0.5% (mass percent for accounting for asphalt) and AC-13 pitch that the dry method for applying example, which mixes environment-friendly type anti-rut agent by volume,
Mixture mixes and stirs, bitumen aggregate ratio 5.3%.Thickness is gathered materials and is poured into mix pot, mix pot is heated and stirred；It is stirring
Under the conditions of, be added above-mentioned anti-rut agent into mix pot, composite modified asphalt is added in subsequent 1-2s, carry out mix 60s, finally plus
Enter miberal powder and carry out mix 60s, obtains the Rut resistance composite modified asphalt mixture of wet-dry change combination.By " highway engineering pitch
And Asphalt Mixture Experiment regulation " test method in (JTJ052-2000) standard tests dynamic stability, Marshall stability
With freeze-thaw split intensity ratio, the performance test results are shown in 1.
Embodiment 3
Each raw material composition and mass percent proportion of the anti-rut agent of the embodiment of the present invention are as follows: useless PET 45%, water
Mud 10%, benzene polyacid methyl esters 3%, lake asphalt 30%, naphthenic base extraction oil 12%.The preparation method is as follows:
(1) useless PET and naphthenic base extraction oil are reconciled according to the proportion and is heated to 160 DEG C, speed of agitator is under 200rpm
Prepare resin premixed object；
(2) cement and benzene polyacid methyl esters is added according to the ratio into resin premixed object, speed of agitator is to be prepared under 700rpm
Machine-inorganic blend；
(3) add in the lake asphalt under the high speed shear state that heating temperature is 175 DEG C, revolving speed is 5000rpm to melting
Enter blend in (2), then adds twin-screw extrude further melt blending extrusion molding, water cooling wire drawing, pelletizing, most
After be dried to obtain the anti-rut agent.
The environment-friendly type anti-rutting asphalt mixture that wet-dry change of the embodiment of the present invention combines is made as follows: by embodiment
1 anti-rut agent and PE/ rubber powder composite modified asphalt gather materials and mineral aggregate, include: wherein PE in PE/ rubber powder composite modified asphalt
For low density polyethylene (LDPE), shoddy is 30 mesh waste tyre rubber powders, and matrix pitch, which is attached most importance to, hands over No. 70 pitches, and extraction oil is that naphthenic base is taken out
It is fuel-displaced, auxiliary agent S90, the proportion composition of composite modified asphalt are as follows: 65 parts of matrix pitch, 10 parts of shoddy, PE10 parts useless, extraction
15 parts, 0.1 part of auxiliary agent of oil.Composite modified asphalt described in the embodiment of the present invention is made according to the following steps: (1) to matrix pitch
It is middle that useless PE and shoddy is added, it is 190 DEG C, sheared under the high speed shear state that revolving speed is 3000rpm in heating temperature
30min；(2) it is slowly added to auxiliary agent in the case where revolving speed is the high speed shear state of 3000rpm, shears 20min；(3) it is in revolving speed
1h is stirred under the stirring of 2000rpm to obtain.
According to the AC-13 type gradation in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004), the present invention is real
It is 0.5% (mass percent for accounting for asphalt) and AC-13 pitch that the dry method for applying example, which mixes environment-friendly type anti-rut agent by volume,
Mixture mixes and stirs, bitumen aggregate ratio 5.3%.Thickness is gathered materials and is poured into mix pot, mix pot is heated and stirred；It is stirring
Under the conditions of, be added above-mentioned anti-rut agent into mix pot, composite modified asphalt is added in subsequent 1-2s, carry out mix 60s, finally plus
Enter miberal powder and carry out mix 60s, obtains the Rut resistance composite modified asphalt mixture of wet-dry change combination.By " highway engineering pitch
And Asphalt Mixture Experiment regulation " test method in (JTJ052-2000) standard tests dynamic stability, Marshall stability
With freeze-thaw split intensity ratio, the performance test results are shown in 1.
Embodiment 4
Each raw material composition and mass percent proportion of the anti-rut agent of the embodiment of the present invention are as follows: useless PVC36%, fine coal
Ash 10%, Methyl Benzene-o-dicarboxylate 2%, bitumen 40%, rubber oil 12%.The preparation method is as follows:
(1) useless PVC and rubber oil are reconciled according to the proportion and is heated to 150 DEG C, speed of agitator is to prepare tree under 200rpm
Rouge pre-composition；
(2) flyash and Methyl Benzene-o-dicarboxylate is added according to the ratio into resin premixed object, speed of agitator is under 1000rpm
Prepare organic-inorganic blend；
(3) in the bitumen under the high speed shear state that heating temperature is 175 DEG C, revolving speed is 5000rpm to melting
Blend in (2) is added, then adds twin-screw extrude further melt blending extrusion molding, water cooling wire drawing, pelletizing,
Finally it is dried to obtain the anti-rut agent.
The environment-friendly type anti-rutting asphalt mixture that wet-dry change of the embodiment of the present invention combines is made as follows: by embodiment
1 anti-rut agent and SBS/ rubber powder composite modified asphalt gather materials and mineral aggregate, wherein include: in SBS/ rubber powder composite modified asphalt
Shoddy is 30~40 mesh waste tyre rubber powders, and SBS is hub-and-spoke configuration, and S/B group becomes 30/70, and molecular weight 200000, matrix drips
Blueness, which is attached most importance to, hands over No. 70 pitches, and extraction oil is furfural extract oil, and auxiliary agent is elemental sulfur, the proportion composition of composite modified asphalt are as follows: base
70 parts of matter pitch, 1 part of SBS, 30 parts of shoddy, 8 parts, 0.2 part of auxiliary agent of extraction oil.It is composite modified described in the embodiment of the present invention
Pitch is made according to the following steps: (1) shoddy and SBS being added into matrix pitch, is 190 DEG C, is in revolving speed in heating temperature
30min is sheared under the high speed shear state of 5000rpm；(2) it is slowly added to help in the case where revolving speed is the high speed shear state of 5000rpm
10min is sheared in agent；(3) in the case where revolving speed is the stirring of 2000rpm, stirring 2h is obtained.According to " asphalt highway construction
Technical specification " AC-13 type gradation in (JTG F40-2004), the dry method of the embodiment of the present invention mixes environment-friendly type anti-rut agent by mixing
Amount is that 0.5% (mass percent for accounting for asphalt) is mixed and stirred with AC-13 asphalt, bitumen aggregate ratio 5.3%.By thickness
Gather materials and pour into mix pot, mix pot is heated and stirred；Under agitation, above-mentioned Rut resistance is added into mix pot
Composite modified asphalt is added in agent, subsequent 1-2s, carries out mix 60s, is eventually adding miberal powder and carries out mix 60s, obtains wet-dry change
In conjunction with Rut resistance composite modified asphalt mixture.By " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTJ 052-
2000) test method test dynamic stability, Marshall stability and the freeze-thaw split intensity ratio in standard, the performance test results
See 1.
1 embodiment 1- embodiment of table, 4 the performance test results
| Project | AC-13 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Dynamic stability (secondary/mm) | 2785 | 15768 | 14912 | 16034 | 15008 |
| Marshall stability (KN) | 8 | 12 | 11.5 | 12.5 | 11.5 |
| Freeze-thaw split intensity ratio (%) | 82.5 | 94.1 | 93.9 | 94.4 | 94.0 |
Influence to different disposal technique to mix temperature is studied, and is as a result seen: table 2.
Wherein, sample 1: anti-rut agent formula and the anti-rut agent of embodiment 1 are essentially identical, but do not include: hard grades of bitumen,
And without rich aromatic hydrocarbons swelling treatment in preparation process, it may be assumed that 1 step 1) of embodiment.
Sample 2；Anti-rut agent formula and the anti-rut agent of embodiment 1 are essentially identical, but do not include: hard grades of bitumen, preparation
In the process by rich aromatic hydrocarbons swelling treatment, it may be assumed that 1 step 1) of embodiment.
Sample 3: anti-rut agent formula is identical as the anti-rut agent of embodiment 1, but molten without rich aromatic hydrocarbons in preparation process
Swollen processing, it may be assumed that 1 step 1) of embodiment.
Sample 4: the anti-rut agent of embodiment 1.
2 mix thermometer of table
| Technique | Mix temperature |
| Conventional (sample 1) | 180~190 DEG C |
| Through rich aromatic hydrocarbons swell process (sample 2) | 170~180 DEG C |
| Hard grades of bitumen wraps (sample 3) | 175~185 DEG C |
| Rich aromatic hydrocarbons swelling swelling+hard grades of bitumen wraps (sample 4) | 170~178 DEG C |
Wet-dry change of the embodiment of the present invention combines the environment-friendly type Rut resistance drip of preparation it can be seen from the above the performance test results
Dynamic stability, Marshall stability, the freeze-thaw split intensity of green mixture are significantly increased than, illustrate Rut resistance of the present invention
The asphalt for the method preparation that agent and dry and wet combine has excellent anti-rut behavior, while its crack resistance at low-temperature
Also very good.The compatibility of anti-rut agent and pitch is also effectively improved.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. the environment-friendly type anti-rut agent that a kind of dry method admixes asphalt, it is characterised in that: by the raw material group of following parts by weight
At: 30~60 parts of the spent resin of recycling, 10~15 parts of inorganic filler, 2~5 parts of organic plasticizer, 30~50 parts of hard grades of bitumen, institute
The mass fraction for stating rich aromatic component is 5~10 parts.
2. anti-rut agent as described in claim 1, which is characterized in that 45~60 parts of the spent resin of recycling, inorganic filler 12.5
~15 parts, 3.5~5 parts of organic plasticizer, 40~50 parts of hard grades of bitumen, the mass fraction of the richness aromatic component is 7.5~10
Part.
3. anti-rut agent as described in claim 1, which is characterized in that 30~45 parts of the spent resin of recycling, inorganic filler 10~
12.5 parts, 2~3.5 parts of organic plasticizer, 30~40 parts of hard grades of bitumen, the mass fraction of the richness aromatic component is 5~7.5
Part.
4. anti-rut agent as described in claim 1, which is characterized in that the spent resin of the recycling is the useless PE of recycling, useless PP,
At least one of useless PET, useless PVC, useless furfural resin, useless phenolic resin.
5. anti-rut agent as described in claim 1, which is characterized in that the inorganic filler is flyash, in red mud, cement
It is at least one.
6. anti-rut agent as described in claim 1, which is characterized in that the organic plasticizer is phthalate, right
At least one of Phthalates, benzene polyacid esters, benzoates plasticiser.
7. anti-rut agent as described in claim 1, which is characterized in that the hard grades of bitumen is needle penetration between the day of 20-50
At least one of right pitch, lake asphalt, rock asphalt.
8. anti-rut agent as described in claim 1, which is characterized in that it is described richness aromatic component be furfural extract oil, rubber oil,
Naphthenic base extraction oil, intermediate base extraction oil, at least one of m- naphthenic base extraction oil.
9. the preparation method that a kind of dry method admixes the environment-friendly type anti-rut agent of asphalt characterized by comprising
(1) spent resin of recycling and rich aromatic component are reconciled and are heated to 140 DEG C~160 DEG C, mechanical mixture is uniform, is made and sets
Rouge pre-composition；
(2) inorganic filler and organic plasticizer is added according to the ratio into resin premixed object, mechanical mixture is uniform, obtains organic and inorganic
Resin blend；
(3) to melting under the high speed shear state that heating temperature is 160 DEG C~190 DEG C, revolving speed is 2000rpm~5000rpm
Hard grades of bitumen in be added above-mentioned organic and inorganic resin blend, then melt blending extrusion molding, water cooling wire drawing, pelletizing, most
After be dried to obtain the anti-rut agent.
10. the environment-friendly type Rut resistance composite modified asphalt mixture that a kind of wet-dry change combines, it is characterised in that: include:
Thickness is gathered materials and heating and is stirred；Under agitation, the described in any item anti-rut agents of claim 1-8,1- is added
Composite modified asphalt is added after 2s, carries out 50~60s of mix, is eventually adding miberal powder and is carried out 50~60s of mix to get wet-dry change
In conjunction with Rut resistance composite modified asphalt mixture.
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| CN111689718A (en) * | 2020-06-17 | 2020-09-22 | 云南阳光道桥股份有限公司 | High-temperature-resistant wet-dry-method modified asphalt mixture and preparation method and application thereof |
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| CN109384989B (en) | 2020-07-07 |
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Effective date of registration: 20200907 Address after: 250000 No. 27 South Grand Road, Shandong, Ji'nan Co-patentee after: Shandong high speed Group Co.,Ltd. Patentee after: SHANDONG University Address before: 250061, No. ten, No. 17923, Lixia District, Ji'nan City, Shandong Province Co-patentee before: QILU TRANSPORTATION DEVELOPMENT GROUP Co.,Ltd. Patentee before: SHANDONG University |